Charleston County, South Carolina Population 2021

Charleston County, South Carolina's estimated population is 421,774 with a growth rate of 1.24% in the past year according to the most recent United States census data. Charleston County, South Carolina is the 4th largest county in South Carolina. The 2010 Population was 350,940 and has seen a growth of 20.18% since this time.

Note: 2020 and 2021 data is projected
Year Population Growth Growth Rate
2021421,7745,1841.24%
2020416,5905,1841.26%
2019411,4065,1841.28%
2018406,2224,2141.05%
2017402,0085,1281.29%
2016396,8807,5701.94%
2015389,3109,5172.51%
2014379,7938,0902.18%
2013371,7037,0751.94%
2012364,6287,2932.04%
2011357,3356,3951.82%
2010350,94055,90118.95%
1990295,03918,0656.52%
1980276,97429,32411.84%
1970247,65031,26814.45%
1960216,38251,52631.26%
1950164,85643,75136.13%
1940121,10520,05519.85%
1930101,050-7,400-6.82%
1920108,45019,85622.41%
191088,5945880.67%
190088,00628,10346.91%
189059,903-42,897-41.73%
1880102,80013,93715.68%
187088,86318,76326.77%
186070,100-2,705-3.72%
185072,805-9,856-11.92%
184082,661-3,677-4.26%
183086,3386,1267.64%
182080,21217,03326.96%
181063,1795,6999.91%
180057,480-9,505-14.19%
179066,9850.00%
2021 Growth Rate
1.24%
County Website
Founded
1769
County Seat
2010 Population
350,940
Growth Since 2010
20.18%
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Charleston County, South Carolina Population Growth

Population by Race

Race Population Percentage
White273,81768.26%
Black or African American107,23926.73%
Two or More Races8,2772.06%
Asian6,0521.51%
Some Other Race4,7601.19%
American Indian and Alaska Native7510.19%
Native Hawaiian and Other Pacific Islander2690.07%
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Charleston County, South Carolina Population by Race

Charleston County, South Carolina Population Pyramid $2021

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Charleston County, South Carolina Median Age

37.8


Total

36.5


Male

39.3


Female

Charleston County, South Carolina Adults

There are 321,701 adults, (63,833 of whom are seniors) in Charleston County, South Carolina.

Charleston County, South Carolina Age Dependency

55.6

Age Dependency Ratio

24.8

Old Age Dependency Ratio

30.8

Child Dependency Ratio

Charleston County, South Carolina Sex Ratio

Female

206,851

51.56%

Male

194,314

48.44%

Charleston County, South Carolina Population by Age

Charleston County, South Carolina Renter vs Owner Occupied by Household Type

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Charleston County, South Carolina Household Types

Type Owner Renter
Married80.7%19.3%
All61.6%38.4%
Male54%46%
Non Family47%53%
Female46.2%53.8%

61.6%

Rate of Home Ownership

Charleston County, South Carolina Households and Families

Type Count Average Size Owned
All159,1952.4561.6
Married68,0023.0580.7
Non Family66,8151.447
Female19,2443.6946.2
Male5,1343.3854

3.14

Average Family Size

2.45

Average Household Size

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Charleston County, South Carolina Households by Type

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Education Attained Count Percentage
Less Than 9th Grade6,8162.39%
9th to 12th Grade16,9735.94%
High School Graduate64,96722.73%
Some College49,09317.18%
Associates Degree23,3128.16%
Bachelors Degree79,64327.87%
Graduate Degree44,95515.73%
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Charleston County, South Carolina Educational Attainment by Sex (over 25)

Charleston County, South Carolina Educational Attainment by Race

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Race Total High School Bachelors
White194,233187,080106,452
Black71,79059,62111,021
Hispanic11,2357,7532,690
Asian4,5614,0532,798
2+ Races3,7823,3381,450
Other Race3,0741,600629
Native American45143096
Islander100624

The highest rate of high school graduation is among white people with a rate of 96.32%.

The highest rate of bachelors degrees is among asian people with a rate of 61.35%.

Charleston County, South Carolina Educational Attainment by Race

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Name Average Male Female
Overall$42,686$50,446$37,262
Less Than 9th Grade$18,729$22,314$14,809
High School Graduate$28,408$32,108$24,762
Some College$36,399$42,959$30,229
Bachelors Degree$53,796$64,658$46,368
Graduate Degree$71,146$92,633$57,986

$42,686

Average Earnings

$50,446

Average Male

$37,262

Average Female

Charleston County, South Carolina Earnings by Educational Attainment

Charleston County, South Carolina Language by Age

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Charleston County, South Carolina Language

93.07% of Charleston County, South Carolina residents speak only English, while 6.93% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 3.93% of the population.

Charleston County, South Carolina Language

Charleston County, South Carolina Poverty by Race

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Name Total In Poverty Poverty Rate
Black103,77325,56724.64%
White251,89219,0777.57%
Hispanic19,9165,73228.78%
Multiple7,6972,13327.71%
Other4,7591,30427.40%
Asian5,8961,11418.89%
Native72827237.36%
Islander21194.27%

13.74%

Overall Poverty Rate

12.17%

Male Poverty Rate

15.17%

Female Poverty Rate

Poverty in Charleston County, South Carolina

The race most likely to be in poverty in Charleston County, South Carolina is Native, with 37.36% below the poverty level.

The race least likely to be in poverty in Charleston County, South Carolina is Islander, with 4.27% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.92%. Among those working part-time, it was 17.64%, and for those that did not work, the poverty rate was 22.95%.

Charleston County, South Carolina Poverty

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Name Poverty
Less Than 9th Grade30.16%
High School16.04%
Some College9.15%
Bachelors or Greater4.15%

Charleston County, South Carolina Poverty Rate by Education

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Rate Poverty
Female Unemployed33.96%
Male Unemployed31.84%
Female Employed8.26%
Male Employed4.49%

Charleston County, South Carolina Poverty Rate by Employment Status and Sex

Charleston County, South Carolina Income by Household Type

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Name Median Mean
Households$64,022$95,174
Families$84,311$119,587
Married Families$105,178$143,378
Non Families$42,772$59,402
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Income by Household Type

Charleston County, South Carolina Marital Status

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Marriage Rates

44.1%

Overall Marriage Rate

46.3%

Male Marriage Rate

42.1%

Female Marriage Rate

Charleston County, South Carolina Married by Age and Sex

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Charleston County, South Carolina Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Charleston County, South Carolina Marital Status by Race

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Charleston County, South Carolina Marital Status

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28,941

Number of Veterans

25,934

Male Veterans

3,007

Female Veterans

War Veterans
Vietnam10,805
First Gulf War7,151
Second Gulf War5,971
Korea2,145
World War II810

Charleston County, South Carolina Veterans by War

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Age Group Veterans
65 to 747,817
35 to 546,436
55 to 646,182
75+5,700
18 to 342,806

Charleston County, South Carolina Veterans by Age

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Name Veterans % of Total
White19,9448.94%
Black8,26210.16%
Hispanic6564.91%
2+ Races3857.93%
Asian1623.20%
Native American10618.56%
Other Race822.35%

Charleston County, South Carolina Veterans by Race

Charleston County, South Carolina Veterans by Education

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8.00%

Veteran Poverty Rate

24.38%

Veteran Disability Rate

Charleston County, South Carolina Veterans by Education

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65.3%

Labor Force Participation

62%

Employment Rate

3.7%

Unemployment Rate

Charleston County, South Carolina Employment by Age

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Charleston County, South Carolina Employment by Race

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Charleston County, South Carolina Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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50.91%

Born in Charleston County, South Carolina

94.58%

Native Born

5.42%

Foreign Born

3.29%

Non Citizen

2.12%

Naturalized

Place of Birth

94.58% of Charleston County, South Carolina residents were born in the United States, with 50.91% having been born in South Carolina. 3.29% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Charleston County, South Carolina Place of Birth

  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990

Sources